Ubonpun Promprangchai. 2001. Criteria and guidelines of appropriate technology for river bank erosion control case study : Chaophraya river, Nakhonsawan province. Field of Study Appropriate Technology for Resource Development, Mahidol University;
Ubonpun Promprangchai. (2001) Criteria and guidelines of appropriate technology for river bank erosion control case study : Chaophraya river, Nakhonsawan province . Mahidol University/Bangkok.
Ubonpun Promprangchai. Criteria and guidelines of appropriate technology for river bank erosion control case study : Chaophraya river, Nakhonsawan province. . Bangkok:Mahidol University, 2001.
Ubonpun Promprangchai. (2001) Criteria and guidelines of appropriate technology for river bank erosion control case study : Chaophraya river, Nakhonsawan province . Mahidol University/Bangkok.